package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service
@Slf4j
public class OrderServicelmpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Value("北京市海淀区上地十街10号")
    private String shopAddress;
    @Value("zOZVPQAV0hB2UiQRGcbMuHpOAVmuAo5i")
    private String ak;
    @Autowired
    private WebSocketServer webSocketServer;

    @Override
    @ApiOperation("用户下单")
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //数据校验（地址是否存在 购物车是否存在）
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        if (addressBookId == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }


        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        //查询购物车 获取用户购买的商品
        ShoppingCart shoppingCart= ShoppingCart.builder()
                        .userId(BaseContext.getCurrentId())
                        .build();
        List<ShoppingCart> shoppingCartList= shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            //购物车中没有商品 没办法下单
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());


        //构造订单对象，将订单数据插入到订单表
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(BaseContext.getCurrentId());
        order.setStatus(Orders.TO_BE_CONFIRMED);
        order.setPayStatus(Orders.REFUND);
        order.setOrderTime(LocalDateTime.now());
        orderMapper.insert(order);

        //构造订单明细 将订单明细数据插入到订单明细表
        List<OrderDetail> orderDetailList =new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList){
            OrderDetail orderDetail = new OrderDetail();//订单明细对象
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //清空购物车
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
        //封装响应数据
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .build();
        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",order.getId());
        map.put("amount",order.getNumber());
        //提醒商家，给商家浏览器页面推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject  jsonObject =new JSONObject();
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }


    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        //////////////////////////////////////////////
        Map map = new HashMap();
        map.put("type", 1);//消息类型，1表示来单提醒
        map.put("orderId", orders.getId());
        map.put("content", "订单号：" + orders.getNumber());

        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
        ///////////////////////////////////////////////////
    }

    /**
     * 订单分页查询
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult historyOrders(int page, int pageSize, Integer status) {
        //构造分页构造器
        PageHelper.startPage(page,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        Page<Orders> pages = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        if (pages != null && pages.getTotal() > 0) {
            for (Orders orders : pages) {
                Long orderId = orders.getId();// 订单id
                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(pages.getTotal(), list);
    }

    /**
     * 订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO orderDetail(Long id) {
        // 查询订单基本信息
        Orders orders = orderMapper.getById(id);
        // 查询订单明细
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        //将订单详情数据封装到orderVO中
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    /**
     * 用户取消订单
     * @param id
     * @throws Exception
     */

    @Override
    public void userCancelById(Long id) throws Exception {
        //根据id查询订单
        Orders orderDb = orderMapper.getById(id);
        if (orderDb == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //判断订单是否可取消
        if (orderDb.getStatus() != Orders.TO_BE_CONFIRMED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders =new Orders();
        orders.setId(id);
        // 订单处于待接单状态下取消，需要进行退款
        if (orderDb.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    orderDb.getNumber(), //商户订单号
                    orderDb.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */

    @Override
    public void again(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();
        //根据订单id查询订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        //将订单详情转换成购物车
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart= new ShoppingCart();
            BeanUtils.copyProperties(x,shoppingCart,"id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;

            }).collect(Collectors.toList());
        shoppingCartMapper.insertBatch(shoppingCartList);
    }


    /**
     * 搜索订单
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> pages = orderMapper.pageQuery(ordersPageQueryDTO);
        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList=getOrderVOList(pages);
        return new PageResult(pages.getTotal(),orderVOList);
    }


    /**
     *
     * @param pages
     * @return
     */
    private List<OrderVO> getOrderVOList(Page<Orders> pages) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = pages.getResult();
        if (!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                //将共同字段复制到OrderVO中
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDetailStr = getOrderDishesStr(orders);
                orderVO.setOrderDishes(orderDetailStr);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    private String getOrderDishesStr(Orders orders) {
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        return String.join("",orderDishList);
    }

    /**
     * 各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //根据状态 查询订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders =Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);

    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     * @throws Exception
     */

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        //根据id查询订单
        Orders orderDb = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (orderDb == null || !orderDb.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        if (orderDb.getPayStatus().equals(Orders.PAID)) {
            //调用微信支付退款接口
            String refund= weChatPayUtil.refund(
                    orderDb.getNumber(),//商户
                    orderDb.getNumber(),//商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额
            log.info("申请退款：{}", refund);
        }
        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders=new Orders();
        orders.setId(orderDb.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     * @throws Exception
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        //根据id查询订单
        Orders ordersDb = orderMapper.getById(ordersCancelDTO.getId());
        //支付状态
        if (ordersDb.getPayStatus().equals(Orders.PAID)) {
            //调用微信支付退款接口
            String refund = weChatPayUtil.refund(
                    ordersDb.getNumber(),//商户
                    ordersDb.getNumber(),//商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额
            log.info("申请退款：{}", refund);
        }
            // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
            Orders orders=new Orders();
            orders.setId(ordersDb.getId());
            orders.setStatus(Orders.CANCELLED);
            orders.setCancelReason(ordersCancelDTO.getCancelReason());
            orders.setCancelTime(LocalDateTime.now());
            orderMapper.update(orders);
        }

    /**
     * 派送订单
     * @param id
     */
    @Override
    public void delivery(Long id) {
        //根据id查询订单
        Orders ordersDb = orderMapper.getById(id);
        //查询订单是否存在 并且 状态为3（待派送）
        if (ordersDb == null || !ordersDb.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .deliveryStatus(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    @Override
    public void complete(Long id) {
        //根据id查询订单
        Orders ordersDb = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为4
        if (ordersDb == null || !ordersDb.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryStatus(Orders.COMPLETED)
                .checkoutTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        //查询订单是否存在
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //基于websocket发送消息给客户端
        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",orders.getId());
        map.put("content", "订单号：" + orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));

    }


    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 50000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}


